1387980465 has 8 divisors (see below), whose sum is σ = 2220768768. Its totient is φ = 740256240.

The previous prime is 1387980439. The next prime is 1387980493. The reversal of 1387980465 is 5640897831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1387980465 - 2⁷ = 1387980337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46266001 + ... + 46266030.

It is an arithmetic number, because the mean of its divisors is an integer number (277596096).

Almost surely, 2^1387980465 is an apocalyptic number.

1387980465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1387980465 is a deficient number, since it is larger than the sum of its proper divisors (832788303).

1387980465 is an equidigital number, since it uses as much as digits as its factorization.

1387980465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92532039.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 1387980465 is about 37255.6098460353. The cubic root of 1387980465 is about 1115.4782788633.

The spelling of 1387980465 in words is "one billion, three hundred eighty-seven million, nine hundred eighty thousand, four hundred sixty-five".